Method and apparatus for eliminating asymmetry error in servo de-modulation using peak-to-peak detection of servo burst amplitudes
US6107840A · kind A · utility
6Cited by
6References
5Claims
0Family size
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Key dates
| Filing date | Dec 18, 1998 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Dec 18, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59611
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A circuit to generate a servo burst signal, including a circuit to generate a first differential signal and a second differential signal, a first half wave rectifier to rectify the first differential signal and to generate a first rectified signal, a second half wave rectifier to rectify the second differential signal and to generate a second rectified signal, a first peak detector to detect a first peak of the first rectified signal, a second peak detector to detect a second peak of the second rectified signal, and a circuit to generate the servo burst signal based on the first peak signal and the second peak signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.